Adapt languages to new syntax token scheme

languages/brainfuck/common.ts

@@ -71,10 +71,10 @@ export const sampleProgram = [
 export const editorTokensProvider: MonacoTokensProvider = {
   tokenizer: {
     root: [
-      [/[-\+]/, "plain"],
-      [/[<>]/, "green"],
-      [/[\[\]]/, "violet"],
-      [/[\,\.]/, "orange"],
+      [/[-\+]/, ""],
+      [/[<>]/, "tag"],
+      [/[\[\]]/, "keyword"],
+      [/[\,\.]/, "identifier"],
     ],
   },
   defaultToken: "comment",

languages/brainfuck/renderer.tsx

@@ -27,10 +27,6 @@ const styles: { [k: string]: CSSProperties } = {
     justifyContent: "center",
     alignItems: "center",
   },
-  activeCell: {
-    background: "#CED9E0",
-    color: "#182026",
-  },
 };
 
 /** Component for displaying a single tape cell */